Single Unit Inspection

DIFFERENTIAL LOCK SWITCH




INSPECT CONTINUITY OF DIFFERENTIAL LOCK SWITCH
a. Disconnect the differential lock switch connector.
b. Check continuity between terminals 1 to 4.
Switch ON: Continuity
Switch OFF: No continuity

4WD CONTROL SOLENOID







INSPECT OPERATION OF 4WD CONTROL SOLENOID
Check air flow of each port when the battery voltage is applied and is not applied to terminals No.1, No.2 of the solenoid.

TRANSFER VACUUM ACTUATOR




1. INSPECT ACTUATOR HOSE CONNECTION
Check that the actuator hoses are connected to the solenoids and actuator tightly and properly.




2. INSPECT ACTUATOR AIRTIGHTNESS (Vacuum Tank)
a. Disconnect the No.1 No.3 and No.4 hoses from the solenoids.
b. Plug the No.3 hose.
c. Connect the mighty-vac to the No.1 hose.
d. Check the the indicator remains stable when a vacuum of 500 mmHg (19.69 in.Hg. 66.7 kPa) is applied.




(No.1 Vacuum Chamber Side)
a. Disconnect the No. 2 and No. 4 hoses form the solenoids.
b. Connect the mighty vac to the No.2 hose.
c. Check that the indicator remains stable when a vacuum of 500 mmHg (19.69 in.Hg, 66.7 kPa) is applied.




(No.2 Vacuum Chamber Side)
a. Disconnect the all hoses from the solenoids.
b. Plug the No.3 hoses.
c. Connect the mighty vac to the No.1 and No.4 hoses.
d. Check that the indicator remains stable when a vacuum of 500 mmHg (19.69 in.Hg, 66.7 kPa) is applied.